Fix typo in rss checker

src/commands/rss_checker.ts

@@ -308,7 +308,7 @@ export default {
                 post.verifyMessage.text = newContents;
                 
                 await verifyRepo.save(post.verifyMessage);
-                await editMsg.edit(toVerifyString(post.verifyMessage.isNew, post.id, post.verifyMessage));
+                await editMsg.edit(toVerifyString(post.id, post.verifyMessage));
                 await msg.delete();
             }
         }